Low frequency transformer adopts high efficiency，Low loss，Environmentally friendly circuit design;With overvoltage protection，Overload protection。The product is beautiful and elegant，The shell is made of high temperature resistant and flame retardant，Using ultrasonic welding，Safe and reliable to use;The output interference is very small，Output voltage is stable，Can better extend the service life of external electrical appliances。
EI57/25
Description
EI57/25
Technical indicators：
Input rated voltage：Single phase 220VAC
Working frequency：50HZ
Output voltage：12VAC
Output current：power：8W
Specification：EI41*26 weight： g
efficiency：≥98%
Temperature rise：<85℃
Waveform distortion：<0.1%
Dielectric strength：2000V，1Minutes without breakdown
Insulation resistance：Winding-to-ground insulation resistance single phase ≥ 2.2MΩ
well known，The ambient temperature of the low-frequency transformer must not exceed minus 15 degrees Celsius.，The maximum temperature should not exceed the hot forty degrees Celsius，just like humans，These two extreme temperature differences are our final bottom line.，so，We must control the temperature well。The relative humidity of the surrounding air should also be less than or equal to 85%，Never exceed this amount.，do you know?Although it should not exceed 40 degrees，Under such conditions of heat resistance，Low frequency transformers are the best。
| Output power (VA) | model | Overall dimensions (L*H*W) | Insulation level |
| 0.5-1.2VA | EI-28 | 28*27*35 | B |
| 1.2-3.0VA | EI-35 | 35*30*35 | B |
| 3.0-10VA | EI-41 | 41*35*48 | B |
| 10-20VA | EI-48 | 48*40*35 | B |
| 20-50VA | EI-57 | 57*50*65 | B |
| 50-80VA | EI-66 | 66*57*80 | B |
| 80-100VA | EI-76 | 76*65*85 | B |
| 100-150VA | EI-86 | 86*72*88 | B |
| 120-220VA | EI-96 | 96*82*100 | B |
| 220-400VA | EI-114 | 114*97*130 | B |
| 400-600VA | EI-133 | 133*112*140 | B |
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